<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <el-row :gutter="20">
        <!-- 搜索框 -->
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getGoodsList">
            <el-button slot="append" icon="el-icon-search" @click="getGoodsList"></el-button>
          </el-input>
        </el-col>
        <!-- 添加商品路由导航 -->
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- table表格区域 -->
      <el-table :data="goodslist"  stripe>
        <el-table-column type="index" align="center"></el-table-column>
        <el-table-column label="商品名称" prop="goods_name" align="center"></el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="105px" align="center"></el-table-column>
        <el-table-column label="商品数量" prop="goods_number" width="120px" align="center"></el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="160px" align="center">
          <template slot-scope="scope">
            {{scope.row.add_time | dateFormat}}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="200px" align="center">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.goods_id)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeById(scope.row.goods_id)"></el-button>
          </template>
        </el-table-column>
      </el-table>
    <!-- 修改商品的对话框 -->
    <el-dialog title="修改商品信息" :visible.sync="editDialogVisible" width="50%">
      <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="90px">
        <el-form-item label="商品名称" prop="goods_name">
          <el-input v-model="editForm.goods_name"></el-input>
        </el-form-item>
        <el-form-item label="商品价格" prop="goods_price">
          <el-input v-model.number="editForm.goods_price"></el-input>
        </el-form-item>
        <el-form-item label="商品数量" prop="goods_number">
          <el-input v-model.number="editForm.goods_number"></el-input>
        </el-form-item>
        <el-form-item label="商品重量" prop="goods_weight">
          <el-input v-model.number="editForm.goods_weight"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button @click="editGoodsInfo">确 定</el-button>
      </span>
    </el-dialog>

      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum" :page-sizes="[5, 10, 15, 20]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 5
      },
      // 商品列表
      goodslist: [],
      // 总数据条数
      total: 0,
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ]
      }
    }
  },
  created() {
    this.getGoodsList()
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo
      })

      if (res.meta.status !== 200) {
        return this.$message.error('获取商品列表失败！')
      }

      //   this.$message.success('获取商品列表成功！')
      console.log(res.data)
      this.goodslist = res.data.goods
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getGoodsList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getGoodsList()
    },
    async removeById(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }
      ).catch(err => err)

      if (confirmResult !== 'confirm') {
        return this.$message.info('已经取消删除！')
      }

      const { data: res } = await this.$http.delete(`goods/${id}`)

      if (res.meta.status !== 200) {
        return this.$message.error('删除失败！')
      }

      this.$message.success('删除成功！')
      this.getGoodsList()
    },
    goAddpage() {
      this.$router.push('/goods/add')
    },
    editGoodsInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        console.log(this.editForm)
        // 发起修改用户信息的数据请求
        const { data: res } = await this.$http.put(
          'goods/' + this.editForm.goods_id,
          {
            goods_name: this.editForm.goods_name,
            goods_price: this.editForm.goods_price,
            goods_number: this.editForm.goods_number,
            goods_weight: this.editForm.goods_weight
          }
        )

        if (res.meta.status !== 201) {
          console.log(res.meta.status)
          return this.$message.error('更新商品信息失败！')
        }

        // 关闭对话框
        this.editDialogVisible = false
        // 刷新数据列表
        this.getGoodsList()
        // 提示修改成功
        this.$message.success('更新商品信息成功！')
      })
    },
    // 获取当前选择的商品渲染到对话框中
    async showEditDialog(id) {
      const { data: res } = await this.$http.get('goods/' + id)

      if (res.meta.status !== 200) {
        return this.$message.error('查询商品信息失败！')
      }

      this.editForm = res.data
      this.editDialogVisible = true
    }
  }
}
</script>

<style lang="less" scoped>
</style>
